Study of brown dwarf atmosphere based on AKARI specctra
| Project/Area Number |
22540260
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Astronomy
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| Research Institution | Japan Aerospace Exploration Agency |
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Principal Investigator |
YAMAMURA Issei 独立行政法人宇宙航空研究開発機構, 宇宙科学研究所, 准教授 (40322630)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2010: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 光学赤外線天文学 / スペース赤外線観測 / 褐色矮星 / 大気構造 / 赤外線分光 / あかり / 低温度星 / 二酸化炭素 / 近赤外線 / 赤外線分光観測 / 「あかり」 / 分子組成 |
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| Research Abstract |
This research aims better understanding of physical and chemical condition in atmospheres of brown dwarfs, objects connecting stars and planets. Thanks to excellent quality near-IR spectra obtained by AKARI, we (1) confirmed that CO and CO2 abundances do not follow a standard theory, (2) found possible variation in elemental abundance among the objects, and (3) discussed radii of the dwarfs for the first time.
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Report
(4 results)
Research Products
(14 results)
